Welcome to our dedicated page for Rambus Del SEC filings (Ticker: RMBS), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Rambus Inc. filings document the reporting obligations of a Nasdaq-listed semiconductor company with common stock registered under the Exchange Act. Recent 8-K reports disclose operating and financial results, earnings-release exhibits, executive appointments and departures, board matters, and other material-event updates tied to the company’s chips, silicon IP, licensing, and product revenue model.
Proxy and shareholder-vote filings describe director elections, auditor ratification, executive compensation votes, governance practices, and voting outcomes from annual meetings. The filing record also includes capital-structure disclosure for Rambus common stock, material agreements and governance matters, and formal exhibits that support the company’s periodic financial and corporate-event reporting.
Rambus Inc. senior vice president and general counsel John Shinn reported open‑market sales of 4,557 shares of common stock. On March 3, 2026, he sold 2,254 shares at an average price of $92.7704, 1,603 shares at $94.0698, and 700 shares at $94.8871. The filing states these transactions were made under a pre‑arranged Rule 10b5‑1 trading plan adopted on December 2, 2025. After the sales, Shinn directly owned 23,023 Rambus shares.
Rambus Inc. President and CEO Luc Seraphin reported selling a total of 39,914 shares of common stock in open-market transactions on March 2, 2026, at weighted average prices ranging from about $95.59 to $102.17 per share. The sales were made under a pre-arranged Rule 10b5-1 trading plan adopted on November 11, 2025, and Seraphin continues to hold 331,070 shares directly after these transactions.
Rambus Inc. director Victor Peng reported an equity award of 168 shares of common stock. The award is structured as restricted stock units granted at a price of $0.00 per share, reflecting a compensatory grant rather than an open-market purchase.
All 168 RSUs are scheduled to vest on April 1, 2026, or the first business day thereafter. Each RSU converts into one share of Rambus common stock at vesting, so Peng’s ownership will increase as the units vest, assuming continued service and satisfaction of the vesting conditions.
RMBS submitted a Form 144 notice showing proposed sales of common stock through Morgan Stanley Smith Barney LLC. The notice lists 33,313 performance shares and 6,601 restricted shares with an entry date of 02/01/2026.
The filing records broker details and a filing date of 03/02/2026 on NASDAQ; it otherwise lists the securities types and quantities for the proposed dispositions.
Rambus Inc. senior vice president and CFO Desmond Lynch sold 4,273 shares of common stock in an open-market transaction at $101.53 per share. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan, and Lynch now holds 63,618 shares of Rambus common stock directly.
Rambus Inc. director Victor Peng filed an initial insider ownership report on Form 3. The filing identifies him as a director of the company but does not report any share purchases, sales, or other transactions, indicating this is a baseline regulatory disclosure rather than a trading event.
Rambus Inc. files its annual report describing a semiconductor and silicon IP business centered on high‑performance memory and security for data center and AI infrastructure.
The company reports strong execution in 2025 across DDR5 and LPDDR5 memory interface chips, expansion into high‑performance and AI PCs, and growing demand for HBM4, GDDR7, PCIe 7.0 and security IP. It highlights a fabless manufacturing model and long-term patent licensing agreements as key cash generators and sources of shareholder returns.
Rambus spent $187.7 million on research and development in 2025, up from $162.9 million in 2024 and $156.8 million in 2023. As of December 31, 2025 it had 791 employees, about 71% in engineering, and held 2,049 patents with 486 applications pending. Revenue is concentrated, with the top five customers providing 66% of 2025 revenue and international customers 82%. The report outlines extensive risk factors including industry cyclicality, AI demand uncertainty, supply chain and cybersecurity exposure, high customer concentration, and complex global regulatory and tax environments.
T. Rowe Price Associates, Inc. has filed a Schedule 13G reporting a passive ownership stake in Rambus Inc. common stock. The firm beneficially owns 5,385,603 shares, representing 5.0% of the outstanding common stock as of the event date 12/31/2025.
T. Rowe Price reports sole voting power over 5,338,341 shares and sole dispositive power over 5,385,570 shares, with no shared voting or dispositive power. The securities are stated to be held in the ordinary course of business and not for the purpose of changing or influencing control of Rambus.
Rambus Inc. appointed Victor Peng as a Class II director, effective immediately, increasing the Board to eight members. He will stand for reelection at the 2027 annual stockholders’ meeting and joins the Board’s Compensation and Human Resources Committee as a non-employee director under the standard fee program.
The company also adjusted compensation for John Allen in connection with his role as Interim Chief Financial Officer. He will receive an additional monthly salary stipend of $17,801 while serving in this role and will be eligible for a $150,000 transition bonus, under an employment agreement the company plans to file with a later periodic report.